Carex wahuensis C.A. Mey.subsp. rubiginosa (R. W. Krauss) T. Koyama, in Wagner, Herbst & Sohmer, Bishop Mus. Occas. Pap. 29: 118. 1989.
*Verification: Wagner, W.L., D.R. Herbst, & S.H. Sohmer. 1989. Man. Fl. Pl. Hawai`i. 988pp..

Type Information
Basionym: Carex wahuensis C.A. Mey. var. rubiginosa R.W. Krauss, Pacific Sci. 4: 257 1950.
Hawai`i, Ka`u Dist., Kilauea Iki. 1200 m. 21 December 1931. St. John et al. 11228.
Holotype [BISH]. Isotype(s) [US!].
*Verification: W.L. Wagner, D.M. Mix.
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